This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 15 |
| 6 | 17 |
| 7 | 25 |
| 8 | 27 |
| 9 | 45 |
| 10 | 51 |
| 11 | 75 |
| 12 | 81 |
| 13 | 85 |
| 14 | 125 |
| 15 | 135 |
| 16 | 153 |
| 17 | 225 |
| 18 | 243 |
| 19 | 255 |
| 20 | 257 |
| 21 | 289 |
| 22 | 375 |
| 23 | 405 |
| 24 | 425 |
| 25 | 459 |
| 26 | 625 |
| 27 | 675 |
| 28 | 729 |
| 29 | 765 |
| 30 | 771 |
| 31 | 867 |
| 32 | 1125 |
| 33 | 1215 |
| 34 | 1275 |
| 35 | 1285 |
| 36 | 1377 |
| 37 | 1445 |
| 38 | 1875 |
| 39 | 2025 |
| 40 | 2125 |
| 41 | 2187 |
| 42 | 2295 |
| 43 | 2313 |
| 44 | 2601 |
| 45 | 3125 |
| 46 | 3375 |
| 47 | 3645 |
| 48 | 3825 |
| 49 | 3855 |
| 50 | 4131 |
| 51 | 4335 |
| 52 | 4369 |